CN212464921U - Smoking set power supply circuit and smoking set - Google Patents
Smoking set power supply circuit and smoking set Download PDFInfo
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- CN212464921U CN212464921U CN202020043013.8U CN202020043013U CN212464921U CN 212464921 U CN212464921 U CN 212464921U CN 202020043013 U CN202020043013 U CN 202020043013U CN 212464921 U CN212464921 U CN 212464921U
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Abstract
The application relates to the field of smoking set, and provides a smoking set power supply circuit and a smoking set, wherein the smoking set power supply circuit comprises a power supply circuit, a voltage regulating circuit, a first diode, a second diode, a first switch circuit, a DC/DC conversion circuit and a microcontroller; the microcontroller is configured to control the voltage regulating circuit to be conducted so that the first diode controls the first switch circuit to be disconnected, and the power supply circuit supplies power to the circuit to be powered through the second diode and the DC/DC conversion circuit after passing through the voltage regulating circuit; the voltage regulating circuit is controlled to be disconnected, so that the first diode controls the first switch circuit to be conducted, and the power supply circuit supplies power to the circuit to be supplied through the first switch circuit and the DC/DC conversion circuit. This application has avoided the problem that the circuit loss that power supply circuit exists is great, power utilization is low among the current smoking set, has promoted power utilization.
Description
Technical Field
The application relates to the technical field of smoking sets, in particular to a smoking set power supply circuit and a smoking set.
Background
Articles such as cigarettes, cigars and the like burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning. Examples of such products are so-called heat non-combustible products, also known as tobacco heating products, or tobacco heating devices, which release compounds by heating the material without combusting it. The material may be, for example, tobacco or other non-tobacco products or combinations, such as blended mixtures that may or may not contain nicotine.
In a conventional smoking set which is not burned when heated at a low temperature, a low dropout regulator (LDO) is generally selected as a power supply circuit for a microprocessor and its related peripheral circuits. When the circuit is not heated, the power supply directly outputs stable voltage to a subsequent circuit through the LDO; during heating, the power supply is regulated by the voltage regulating circuit, and then the regulated voltage is output to a subsequent circuit through the LDO.
The circuit has the problems of large circuit loss and low power utilization rate.
SUMMERY OF THE UTILITY MODEL
The application provides a smoking set supply circuit and smoking set aims at solving the problem that the circuit loss is great, the power utilization rate is low that supply circuit exists in the current smoking set.
The first aspect of the application provides a smoking set power supply circuit, which comprises a power supply circuit, a voltage regulating circuit, a first diode, a second diode, a first switch circuit, a DC/DC conversion circuit and a microcontroller;
the input end of the voltage regulating circuit is connected with the power supply circuit, and the output end of the voltage regulating circuit is respectively connected with the first input end of the first diode and the first input end of the second diode; the voltage regulating circuit is used for regulating the output voltage of the power supply circuit to a preset voltage;
the output end of the first diode is electrically connected with the control end of the first switch circuit;
the output end of the second diode is electrically connected with the input end of the DC/DC conversion circuit and the output end of the first switch circuit;
the input end of the first switch circuit is electrically connected with the power supply circuit, and the output end of the first switch circuit is electrically connected with the input end of the DC/DC conversion circuit;
the output end of the DC/DC conversion circuit is electrically connected with a circuit to be powered;
the microcontroller configured to:
the voltage regulating circuit is controlled to be conducted to work, so that the first diode controls the first switch circuit to be disconnected, and after the power supply circuit passes through the voltage regulating circuit, the power supply circuit supplies power to the circuit to be supplied with power through the second diode and the DC/DC conversion circuit;
and controlling the voltage regulating circuit to be disconnected so that the first diode controls the first switch circuit to be switched on, and the power supply circuit supplies power to the circuit to be supplied with power through the first switch circuit and the DC/DC conversion circuit.
A second aspect of the present application provides a smoking article comprising the smoking article power supply circuit of the first aspect.
The application provides a smoking set supply circuit and smoking set has avoided the problem that the circuit loss that supply circuit exists is great, power utilization is low among the current smoking set, has promoted power utilization.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic block diagram of a smoking set power supply circuit provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a voltage boosting circuit in a smoking set power supply circuit according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a voltage regulator circuit, a first diode, a second diode, a first switch circuit, and a DC/DC converter circuit in a smoking set power supply circuit according to an embodiment of the disclosure;
FIG. 4 is a schematic diagram of a charging circuit in a smoking set power supply circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a smoking set according to a second embodiment of the present disclosure.
Detailed Description
To facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "electrically connected" to another element, it can be directly electrically connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Implementation mode one
As shown in fig. 1, a smoking set power supply circuit provided in one embodiment of the present application includes a power supply circuit 11, voltage regulating circuits (12, 13), a first diode 14, a second diode 15, a first switch circuit 16, a DC/DC conversion circuit 17, a microcontroller 18, and a charging circuit.
Voltage regulating circuits (12, 13) having input terminals connected to the power supply circuit 11 and output terminals connected to a first input terminal of the first diode 14 and a first input terminal of the second diode 15, respectively; the voltage regulating circuits (12, 13) are used for regulating the output voltage of the power supply circuit 11 to a preset voltage.
In this example, the voltage regulator circuit (12, 13) includes a voltage boost circuit 12 and a voltage regulator circuit 13.
The input end of the booster circuit 12 is electrically connected with the power circuit 11, the output end is electrically connected with the input end of the voltage stabilizing circuit 13, and the control end is connected with the microcontroller 18. The booster circuit 12 adjusts the voltage output from the power supply circuit 11 to a first voltage.
Referring to fig. 2, in an example, the voltage boost circuit 12 includes a second switch circuit 121 and a first adjusting circuit 122;
a second switch circuit 121, an input end of which is electrically connected to the power supply circuit 11, an output end of which is electrically connected to the input end of the first adjusting circuit 122, and a control end of which is connected to the microcontroller 18;
a first adjusting circuit 122, the output end of which is electrically connected with the input end of the voltage stabilizing circuit 13; the first adjusting circuit 122 is configured to adjust the voltage output by the power supply circuit 11 to a first voltage.
In this example, the second switching circuit 121 includes a first switching tube Q5 and a second switching tube Q6;
a first switch tube Q5, the input end of which is electrically connected to the power circuit 11 (shown as BAT _ IN the figure), the output end of which is electrically connected to the input end of the first adjusting circuit 122, and the control end of which is electrically connected to the input end of the second switch tube Q6;
the output end of the second switching tube Q6 is grounded, and the control end is used for receiving a first control signal 10V8_ EN output by the microcontroller 18; the first control signal 10V8_ EN is used to control the on/off of the second switch Q6, and thus the on/off of the first switch Q5.
In this example, the first switch transistor Q5 is a PMOS transistor, and the second switch transistor Q6 is an NMOS transistor. It should be noted that, when the switching tube is an NMOS tube, the drain of the NMOS tube may be used as an input end, the source of the NMOS tube may be used as an output end, and the gate of the NMOS tube may be used as a control end; when the switch tube is a PMOS tube, the source electrode of the PMOS tube can be used as an input end, the drain electrode of the PMOS tube can be used as an output end, and the grid electrode of the PMOS tube can be used as a control end. Hereinafter, the description will be omitted.
In this example, the first adjusting circuit 122 includes an integrated chip U5 and its peripheral circuits, pins (VIN, EN) of the integrated chip U5 are electrically connected to the output terminal of the first switch tube Q5, and a pin VOUT of the integrated chip U5 is electrically connected to the input terminal of the regulator circuit 13 after being filtered (shown as 10 — 8VDD in the figure).
And the input end of the voltage stabilizing circuit 13 is electrically connected with the output end of the booster circuit 12, the output end of the voltage stabilizing circuit is respectively electrically connected with the first input end of the first diode 14 and the first input end of the second diode 15, and the control end of the voltage stabilizing circuit is connected with the microcontroller 18. The constant voltage circuit 13 is configured to adjust the first voltage output from the booster circuit 12 to a second voltage.
Referring to fig. 3, in one example, the voltage stabilizing circuit 13 includes a third switching circuit 131 and a second adjusting circuit 132;
the input end of the third switch circuit 131 is electrically connected with the output end of the booster circuit 12, the output end of the third switch circuit is electrically connected with the input end of the second adjusting circuit 132, and the control end of the third switch circuit is connected with the microcontroller 18;
a second adjusting circuit 132, an output terminal of which is electrically connected to the first input terminal of the first diode 14 and the first input terminal of the second diode 15, respectively; the second adjusting circuit 132 is configured to adjust the first voltage output by the voltage boost circuit 12 to a second voltage.
In this example, the third switching circuit 131 includes a third switching tube Q11 and a fourth switching tube Q12;
the input end of the third switching tube Q11 is electrically connected with the output end of the booster circuit 12, the output end of the third switching tube Q11 is electrically connected with the input end of the second adjusting circuit 132, and the control end of the third switching tube Q11 is electrically connected with the input end of the fourth switching tube Q12;
the output end of the fourth switching tube Q12 is grounded, and the control end is used for receiving a second control signal 10VB _ TO _3V3_ EN output by the microcontroller 18; the second control signal 10VB _ TO _3V3_ EN is used TO control the fourth switching transistor Q12 TO be turned on and off, and further control the third switching transistor Q11 TO be turned on and off.
The third switch tube Q11 is a PMOS tube, and the fourth switch tube Q12 is an NMOS tube.
In this example, the second adjusting circuit 132 includes a transistor Q16, a first resistor R51, a capacitor C11, and a regulator D8;
a collector of the triode Q16 is electrically connected with an output end of the third switching circuit 131 and one end of the first resistor R51, an emitter of the triode Q16 is electrically connected with a first input end of the first diode 14 and a first input end of the second diode 15, respectively, a base of the triode Q16 is electrically connected with the other end of the first resistor R51, one end of the voltage regulator D8 and one end of the capacitor C11;
the other end of the voltage regulator tube D8 and the other end of the capacitor C11 are both connected with ground.
A first diode 14, a first input terminal of which is electrically connected to the emitter of the transistor Q16, a second input terminal of which is electrically connected to a second output terminal of the charging circuit 19 (shown in the figure as USB _ 5V), and an output terminal of which is electrically connected to the control terminal of the first switching circuit 16;
and a second diode 15 having a first input terminal electrically connected to the emitter of the transistor Q16, a second input terminal electrically connected to a second output terminal (shown by USB _5V in the figure) of the charging circuit 19, and an output terminal electrically connected to the input terminal of the DC/DC conversion circuit 17 and the output terminal of the first switching circuit 16.
Referring to fig. 3 again, in an example, the first diode 14 and the second diode 15 each include two common-cathode diodes, and anodes of the two common-cathode diodes are the first input terminal and the second input terminal, respectively.
The first switch circuit 16 has an input terminal electrically connected to the power supply circuit 11, an output terminal electrically connected to an input terminal of the DC/DC converter circuit 17, and a control terminal electrically connected to an output terminal of the first diode 14.
Referring again to fig. 3, in an example, the first switch circuit 16 includes a fifth switch Q20 and a second resistor R54;
a fifth switching tube Q20, an input end of which is electrically connected to the power circuit 11 (shown as BAT _ IN the figure), an output end of which is electrically connected to the input end of the DC/DC conversion circuit 17, and a control end of which is electrically connected to one end of the second resistor R54 and the output end of the first diode 14; the other end of the second resistor R54 is connected to ground.
In this example, the fifth switching transistor Q20 is a PMOS transistor. In other examples, the transistor may be an NMOS transistor.
The DC/DC conversion circuit 17 includes an integrated chip U7 and its peripheral circuits. The output terminal (shown as 3V3 in the figure) of the DC/DC conversion circuit 17 is electrically connected with a circuit to be supplied with power. The circuit to be powered includes, but is not limited to, the microcontroller 18 and its control circuitry.
The microcontroller 18 is configured to control the boost circuit 12 and the voltage stabilizing circuit 13 to conduct and work, so that the first diode 14 controls the first switch circuit 16 to be disconnected, and after the power supply circuit 11 passes through the boost circuit 12 and the voltage stabilizing circuit 13, the power supply circuit supplies power to the circuit to be supplied with power through the second diode 15 and the DC/DC conversion circuit 17;
the microcontroller 18 is further configured to control the voltage boosting circuit 12 and/or the voltage stabilizing circuit 13 to be switched off, so that the first diode 14 controls the first switch circuit 16 to be switched on, and the power supply circuit 11 supplies power to the circuit to be powered through the first switch circuit 16 and the DC/DC conversion circuit 17;
a microcontroller 18, which is also configured to charge the power supply circuit 11 when it is turned on with an external power supply circuit (not shown in the figure) that supplies power to the circuit to be supplied through the second diode 15 and the DC/DC conversion circuit 17, while causing the first diode 14 to control the first switching circuit 16 to be turned off.
Referring to fig. 4, the charging circuit 19 includes an integrated charging chip U3 and its peripheral circuits. The charging circuit 19 has a first output terminal (shown by BAT +, BAT-), and a second output terminal (shown by USB _5V in the figure), the first output terminal of the charging circuit 19 is electrically connected to the power supply circuit 11, and the second output terminal of the charging circuit 19 is electrically connected to the second input terminal of the first diode 14 and the second input terminal of the second diode 15, respectively.
The operation of the smoking set power supply circuit of the present example is described below in conjunction with the circuit schematic diagrams shown in fig. 2-4:
1) working process when smoking set is not heated
As shown in fig. 2-3, at this time, the control signal of the microcontroller 18 controls the voltage boost circuit 12 and the voltage regulator circuit 13 to be disconnected, and specifically, the first control signal 10V8_ EN controls the second switching tube Q6 to be disconnected, and further controls the first switching tube Q5 to be disconnected; the second control signal 10VB _ TO _3V3_ EN controls the turn-off of the fourth switching tube Q12, and thus controls the turn-off of the third switching tube Q11.
As shown in fig. 3, since the voltage boost circuit 12 and the voltage regulator circuit 13 are disconnected, the output terminal of the first diode 14 has a low level, and the fifth switching transistor Q20 is controlled to be turned on when the output terminal of the first diode is inputted to the control terminal of the fifth switching transistor Q20. The power supply circuit 11 is input through BAT _ IN, and supplies power to the circuit to be powered through the fifth switching tube Q20 and the DC/DC conversion circuit 17.
2) Working process of smoking set during heating
As shown in fig. 2-fig. 3, at this time, the control signal of the microcontroller 18 controls the conduction of the voltage boost circuit 12 and the voltage regulator circuit 13, and specifically, the first control signal 10V8_ EN controls the conduction of the second switching tube Q6, thereby controlling the conduction of the first switching tube Q5; the second control signal 10VB _ TO _3V3_ EN controls the conduction of the fourth switching tube Q12, and further controls the conduction of the third switching tube Q11.
As shown in fig. 3, since the voltage boost circuit 12 and the voltage regulator circuit 13 are turned on, the output terminal of the first diode 14 is at a high level, and the fifth switching transistor Q20 is controlled to be turned off when the output voltage is inputted to the control terminal of the fifth switching transistor Q20. At this time, the power supply circuit 11 outputs a voltage of 10.8V through the booster circuit 12; the voltage of 10.8V is regulated to 5V through a triode Q16, a first resistor R51, a capacitor C11 and a voltage regulator tube D8 in the voltage regulator circuit 13; the voltage-stabilizing circuit 5V supplies power to the circuit to be powered through the second diode 15 and the DC/DC conversion circuit 17.
3) Working process of charging circuit during charging
As shown in fig. 3-4, when the charging circuit is operated, on one hand, the power circuit 11 (such as a storage battery) is charged through the BAT + and the BAT-terminal, and on the other hand, the power circuit is output to the second input terminal of the first diode 14 and the second input terminal of the second diode 15 through the USB _5V terminal. At this time, the output terminal of the first diode 14 is at a high level, and when the output terminal is inputted to the control terminal of the fifth switching transistor Q20, the fifth switching transistor Q20 is controlled to be turned off.
The output voltage of the USB-5V end supplies power to the circuit to be supplied through the second diode 15 and the DC/DC conversion circuit 17.
Second embodiment
Fig. 5 is a smoking set according to the second embodiment of the present application, and the smoking set 100 includes the smoking set power supply circuit according to the first embodiment.
The smoking set 100 may be a central heating mode (in which the aerosol-forming substrate is directly contacted with the outer periphery of the heating body) or a peripheral heating mode (in which the aerosol-forming substrate is wrapped by the cylindrical heating body), and the smoking set 100 may also be configured to heat the aerosol-forming substrate by one or more of heat conduction, electromagnetic induction, chemical reaction, infrared action, resonance, photoelectric conversion, and photothermal conversion to generate aerosol for smoking. Infrared heating is preferred.
It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (13)
1. A smoking set power supply circuit comprises a power supply circuit, and is characterized by further comprising a voltage regulating circuit, a first diode, a second diode, a first switch circuit, a DC/DC conversion circuit and a microcontroller;
the input end of the voltage regulating circuit is connected with the power supply circuit, and the output end of the voltage regulating circuit is respectively connected with the first input end of the first diode and the first input end of the second diode; the voltage regulating circuit is used for regulating the output voltage of the power supply circuit to a preset voltage;
the output end of the first diode is electrically connected with the control end of the first switch circuit;
the output end of the second diode is electrically connected with the input end of the DC/DC conversion circuit and the output end of the first switch circuit;
the input end of the first switch circuit is electrically connected with the power supply circuit, and the output end of the first switch circuit is electrically connected with the input end of the DC/DC conversion circuit;
the output end of the DC/DC conversion circuit is electrically connected with a circuit to be powered;
the microcontroller configured to:
the voltage regulating circuit is controlled to be conducted to work, so that the first diode controls the first switch circuit to be disconnected, and after the power supply circuit passes through the voltage regulating circuit, the power supply circuit supplies power to the circuit to be supplied with power through the second diode and the DC/DC conversion circuit;
and controlling the voltage regulating circuit to be disconnected so that the first diode controls the first switch circuit to be switched on, and the power supply circuit supplies power to the circuit to be supplied with power through the first switch circuit and the DC/DC conversion circuit.
2. The smoking article power supply circuit of claim 1, wherein the voltage regulator circuit comprises a boost circuit and a regulator circuit;
the input end of the booster circuit is electrically connected with the power supply circuit, the output end of the booster circuit is electrically connected with the input end of the voltage stabilizing circuit, and the control end of the booster circuit is connected with the microcontroller;
and the output end of the voltage stabilizing circuit is respectively and electrically connected with the first input end of the first diode and the first input end of the second diode, and the control end of the voltage stabilizing circuit is connected with the microcontroller.
3. The smoking article power supply circuit of claim 1, further comprising a charging circuit having a first output and a second output; the first diode and the second diode each further comprise a second input terminal;
a first output end of the charging circuit is electrically connected with the power supply circuit, and a second output end of the charging circuit is electrically connected with a second input end of the first diode and a second input end of the second diode respectively;
the charging circuit is configured to charge the power supply circuit when the charging circuit is conducted with an external power supply circuit, and simultaneously, the first diode controls the first switch circuit to be switched off, and the external power supply circuit supplies power to the circuit to be powered through the second diode and the DC/DC conversion circuit.
4. A smoking article power supply circuit according to claim 3, wherein said first diode and said second diode each comprise two common-cathode diodes.
5. The smoking article power supply circuit of claim 2, wherein the boost circuit comprises a second switching circuit and a first regulating circuit;
the input end of the second switch circuit is electrically connected with the power supply circuit, the output end of the second switch circuit is electrically connected with the input end of the first adjusting circuit, and the control end of the second switch circuit is connected with the microcontroller;
the output end of the first adjusting circuit is electrically connected with the input end of the voltage stabilizing circuit; the first adjusting circuit is used for adjusting the voltage output by the power supply circuit into a first voltage.
6. The smoking article power supply circuit of claim 5, wherein the second switching circuit comprises a first switching tube and a second switching tube;
the input end of the first switch tube is electrically connected with the power supply circuit, the output end of the first switch tube is electrically connected with the input end of the first adjusting circuit, and the control end of the first switch tube is electrically connected with the input end of the second switch tube;
the output end of the second switch tube is grounded, and the control end of the second switch tube is used for receiving a first control signal output by the microcontroller; the first control signal is used for controlling the connection and disconnection of the second switch tube, and further controlling the connection and disconnection of the first switch tube.
7. The smoking article power supply circuit of claim 6, wherein the first switch tube is a PMOS tube and the second switch tube is an NMOS tube.
8. The smoking article power supply circuit of claim 2, wherein the voltage stabilizing circuit comprises a third switching circuit and a second regulating circuit;
the input end of the third switch circuit is electrically connected with the output end of the booster circuit, the output end of the third switch circuit is electrically connected with the input end of the second adjusting circuit, and the control end of the third switch circuit is connected with the microcontroller;
the output end of the second adjusting circuit is electrically connected with the first input end of the first diode and the first input end of the second diode respectively; the second adjusting circuit is used for adjusting the first voltage output by the boosting circuit into a second voltage.
9. The smoking article power supply circuit of claim 8, wherein the third switching circuit comprises a third switching tube and a fourth switching tube;
the input end of the third switch tube is electrically connected with the output end of the booster circuit, the output end of the third switch tube is electrically connected with the input end of the second adjusting circuit, and the control end of the third switch tube is electrically connected with the input end of the fourth switch tube;
the output end of the fourth switching tube is grounded, and the control end of the fourth switching tube is used for receiving a second control signal output by the microcontroller; the second control signal is used for controlling the on and off of the fourth switching tube, and further controlling the on and off of the third switching tube.
10. The smoking set power supply circuit of claim 9, wherein the third switching tube is a PMOS tube and the fourth switching tube is an NMOS tube.
11. The smoking article power supply circuit of claim 8, wherein the second regulating circuit comprises a transistor, a first resistor, a capacitor and a voltage regulator tube;
a collector of the triode is electrically connected with an output end of the third switching circuit and one end of the first resistor, an emitter of the triode is electrically connected with a first input end of the first diode and a first input end of the second diode respectively, and a base of the triode is electrically connected with the other end of the first resistor, one end of the voltage regulator tube and one end of the capacitor;
the other end of the voltage-stabilizing tube and the other end of the capacitor are both connected with the ground.
12. A smoking article power supply circuit according to any one of claims 1-11, wherein said first switching circuit comprises a fifth switching tube and a second resistor;
the input end of the fifth switching tube is electrically connected with the power circuit, the output end of the fifth switching tube is electrically connected with the input end of the DC/DC conversion circuit, and the control end of the fifth switching tube is electrically connected with one end of the second resistor and the output end of the first diode;
the other end of the second resistor is grounded.
13. A smoking article, characterized in that said smoking article comprises a smoking article power supply circuit according to any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020043013.8U CN212464921U (en) | 2020-01-09 | 2020-01-09 | Smoking set power supply circuit and smoking set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020043013.8U CN212464921U (en) | 2020-01-09 | 2020-01-09 | Smoking set power supply circuit and smoking set |
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| Publication Number | Publication Date |
|---|---|
| CN212464921U true CN212464921U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020043013.8U Active CN212464921U (en) | 2020-01-09 | 2020-01-09 | Smoking set power supply circuit and smoking set |
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| Country | Link |
|---|---|
| CN (1) | CN212464921U (en) |
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